On August 9th 2012, Google released the guidelines for conducting A/B and multivariate tests. The guidelines were released in response to the commonly asked question – “How will testing impact search ranking?” Google has warned marketers from running the experiments for too long.

Bounce Rate is the percentage of visitors who just access one page in a website and then leaves. If you have a popular blog, regular visitors will not access more than one page in a visit. In such cases, Bounce rate based on page view would be meaningless. Third Party Web Analytics Software like Clicky Web Analytics had been using time on page as a factor for determining Bounce Rate.